We're going to solve 1389 multiplied by 9085
1389 × 9085 = 9085 × (1389)
+ 9085 × 9 that equals 81765
+ 9085 × 80 giving us 726800
+ 9085 × 300 producing 2725500
+ 9085 × 1000 giving us 9085000

= 12619065
